Since its founding in 1891, Drexel University has emphasized its strengths in engineering, science and technology undergraduate and graduate degree programs. These programs are all accredited by the national Accreditation Board for Engineering and Technology. Drexel offers extensive published research in human-computer interaction, modeling and simulation, and other safety and human factors topics. Among other initiatives, faculty have worked to characterize ATC judgment and decision making with respect to conflict detection. Through a $12.5 million grant from the Department of Defense, Drexel also established the Applied Communications and Information Network (ACIN) Center. In addition, Drexel was re-designated by the National Security Agency (NSA) as a Center of Academic Excellence in Information Assurance Education. The college's $35 million Bossone Research Enterprise Center is home to facilities in nanotechnology, information networking and smart infrastructures. Drexel is currently a core institution partner of the FAA Center of Excellence for UAS Research.